<p>Current study explores the use of bagasse ash as a partial replacement of cement to produce concrete. The replacement levels adopted were 0%, 5%, 10%, 15%, 20%, 25%, 30%, and 35%. Bagasse ash is a waste product of sugarcane industry and the major challenge is its safe disposal on land to reduce its harmful environmental effects. Bagasse ash may serve as a substitute for cement in concrete production, making sustainable concrete. Concrete samples having bagasse ash were tested for workability, splitting tensile strength and flexural strength. Fresh concrete samples containing bagasse ash were tested for workability. For flexural strength test, beam specimens of dimensions (150 × 150 × 600) mm were cast and cured for 28 days, while cylindrical specimens (150 × 300&#xa0;mm) were cast and cured for 28 days for splitting tensile test. Concrete mix ratio was 1:2:4 with water-cement ratio of 0.5. Flexural strength test was conducted on 600 kN flexure testing machine while for splitting tensile strength test, 3000 kN compression testing machine was used. The findings indicated that maximum workability was reported for concrete with 10% bagasse ash which was 115&#xa0;mm. Better flexural strength value was also obtained at same percentage of bagasse ash, which was 5.4 Mpa. For splitting tensile strength, optimum content of bagasse ash was 5%, which resulted in a value of 4.77 Mpa. All three properties were found to be reduced at higher percentages of bagasse ash. Future research study is recommended to investigate the durability properties of concrete with bagasse ash at same replacement levels.</p>

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Impact of bagasse ash on workability, splitting tensile strength and flexural strength properties of concrete

  • Syed Nasir Abbas,
  • Muhammad Irshad Qureshi

摘要

Current study explores the use of bagasse ash as a partial replacement of cement to produce concrete. The replacement levels adopted were 0%, 5%, 10%, 15%, 20%, 25%, 30%, and 35%. Bagasse ash is a waste product of sugarcane industry and the major challenge is its safe disposal on land to reduce its harmful environmental effects. Bagasse ash may serve as a substitute for cement in concrete production, making sustainable concrete. Concrete samples having bagasse ash were tested for workability, splitting tensile strength and flexural strength. Fresh concrete samples containing bagasse ash were tested for workability. For flexural strength test, beam specimens of dimensions (150 × 150 × 600) mm were cast and cured for 28 days, while cylindrical specimens (150 × 300 mm) were cast and cured for 28 days for splitting tensile test. Concrete mix ratio was 1:2:4 with water-cement ratio of 0.5. Flexural strength test was conducted on 600 kN flexure testing machine while for splitting tensile strength test, 3000 kN compression testing machine was used. The findings indicated that maximum workability was reported for concrete with 10% bagasse ash which was 115 mm. Better flexural strength value was also obtained at same percentage of bagasse ash, which was 5.4 Mpa. For splitting tensile strength, optimum content of bagasse ash was 5%, which resulted in a value of 4.77 Mpa. All three properties were found to be reduced at higher percentages of bagasse ash. Future research study is recommended to investigate the durability properties of concrete with bagasse ash at same replacement levels.